MESON Chess Problem Database

Problem Display
PID: 15732 (8/2p3n1/2K5/3Q4/5k2/7B/5P2/8 w - - 0 1)

Lincoln, Robert A

Newark Star-Ledger, 1987

8/2p3n1/2K5/3Q4/5k2/7B/5P2/8

#2

4 + 3

2838 Fun with Chess Miniatures 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Sf5
      • 2.Qxf5#
    • 1...Sh5
      • 2.Qf5#
    • 1...Se6
      • 2.Qf5#
    • 1...Se8
      • 2.Qf5#
  • Tries
    • 1.Bg4?
      • 1...Sf5
        • 2.Qxf5#
      • 1...Sh5
        • 2.Qf5#
      • 1...Se6
        • 2.Qf5#
      • 1...Se8
        • 2.Qf5#
      • 1...Kxg4!
    • 1.Be6?
      • 1...Sf5
        • 2.Qxf5#
      • 1...Sh5
        • 2.Qf5#
      • 1...Se8
        • 2.Qf5#
      • 1...Sxe6!
    • 1.Bd7?
      • 1...Sf5
        • 2.Qxf5#
      • 1...Sh5
        • 2.Qf5#
      • 1...Se8
        • 2.Qf5#
      • 1...Se6!
    • 1.Bc8?
      • 1...Sf5
        • 2.Qxf5#
      • 1...Sh5
        • 2.Qf5#
      • 1...Se8
        • 2.Qf5#
      • 1...Se6!
    • 1.Qd2+?
      • 1...Kf3
        • 2.Qe3#
      • 1...Ke4
        • 2.Qe3#
      • 1...Ke5!
    • 1.Qd4+?
      • 1...Kf3
        • 2.Qe3#
      • 1...Kg5!
    • 1.Qe5+?
      • 1...Kf3
        • 2.Qe3#
      • 1...Kxe5!
    • 1.Qg5+?
      • 1...Kf3
        • 2.Qe3#
      • 1...Ke4
        • 2.Qe3#
      • 1...Kxg5!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Qe3#
      • 1...Kf3
        • 2.Qe3#
      • 1...Ke4
        • 2.Qe3#
      • 1...Sf5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • S(c);N_GUARD::QAR1(C),XS(c)
    • S(c);N_GUARD::QAR1(C)
  • Tries
    • Try
      • B(B);
      • Vars
        • S(c);N_GUARD::QAR1(C),XS(c)
        • S(c);N_GUARD::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT,XB(B)
    • Try
      • B(B);
      • Vars
        • S(c);N_GUARD::QAR1(C),XS(c)
        • S(c);N_GUARD::QAR1(C)
      • Refutation
        • S(c);XB(B)
    • Try
      • B(B);
      • Vars
        • S(c);N_GUARD::QAR1(C),XS(c)
        • S(c);N_GUARD::QAR1(C)
      • Refutation
        • S(c);
    • Try
      • B(B);
      • Vars
        • S(c);N_GUARD::QAR1(C),XS(c)
        • S(c);N_GUARD::QAR1(C)
      • Refutation
        • S(c);
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT,XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • K(a);P-FLIGHT::QAR1(C)
      • S(c);N_GUARD::QAR1(C),XS(c)
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